<template>
  <div>
    <!-- 面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>数据统计</el-breadcrumb-item>
      <el-breadcrumb-item>数据报表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图 -->
    <el-card>
      <div id="chart" style="width: 100%; height: 400px"></div>
    </el-card>
  </div>
</template>

<script>
import * as echarts from 'echarts';
//const echarts = require('echarts');
import _ from 'lodash';

export default {
  data() {
    return {
      options: {
          title: {
            text: '用户来源'
          },
          tooltip: {
            trigger: 'axis',
            axisPointer: {
              type: 'cross',
              label: {
                backgroundColor: '#E9EEF3'
              }
            }
          },
          grid: {
            left: '3%',
            right: '4%',
            bottom: '3%',
            containLabel: true
          },
          xAxis: [
            {
              boundaryGap: false
            }
          ],
          yAxis: [
            {
              type: 'value'
            }
          ]
        }
    }
  },
  async mounted() {
    // 初始化echart
    var chart = echarts.init(document.getElementById("chart"));
    // 远程获取数据
    const { data: res}  = await this.$http.get('reports/type/1');
    if(res.meta.status!=200) {
      return this.$message.error('获取数据失败！');
    }
    //合并本地选项
    const result=_.merge(res.data, this.options);
    
    chart.setOption(result);
  },
};
</script>

<style lang="less" scoped></style>
